1. Collage of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. National Institute of Metrology, Beijing 100029, China
Abstract：To study the influence of stations mutual position relationship on the measurement accuracy of multilateration system, an error transfer model was derived from the coordinate solution formula.The formula related to the error amplification factor and the station layout parameters in the model are studied and analyzed.From this formula, it can be concluded that increasing two key layout parameters within a certain range can improve the measurement accuracy of the system, which has been verified through simulation and experiments. The experimental results showed that the repeatability error of the system can be reduced from 20μm to 10μm when the key layout parameters were increased from 1m to 3m, and the optimization effect was obvious. Meanwhile, the systems with similar layout parameters had been compared, whose stations were at different locations. The results showed that the different locations of stations in system rarely affected the system precision while systems layout parameters were almost consistent, and suggested that method proposed can improve the measurement accuracy and had flexibility.
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2023, Vol. 44 
